Signaling device for writing or copying telegraphs.



A. 'HAPPENECKER. SIGNALING DEVICE FURWRITING 0R COPYING TELEGRAPHS.

' APPLICATION FILED 061'. 27 1913.

Patented Dec. 19, 1916.

MIM

it is not known when writin ALIHONS RAPPENECKER, OF BBEMEN, GERMANY, ASSIGNCR TO TELELPANTOGRAEH- GESELLSZW EMET MIT BESCHLUANKI'ER EAFTUHG, OF BREMEN, GER-MANY, A COB- Specification of Letters Patent.

- resented Dec, is, rein.

Application filed llctobcr 27, 1913. Serial No. 297,686.

To all whom may concern:

Be it known that I, ALrnoNs RAPPE- Nnoman, director, subject of the German Emperor, residing at Bolnndhaus, Am

Brill 84.2, Bremen, Germany, have invented certain new. and useful Improvements in.

Signaling Devices for Writing or Copying Telegraphs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and use the same.

Telegraphs which bring about the reproduction of handwriting and the like by u photographic process, require, for produc ing ii. light point which leaves marks on a sensitive paper by means 0:]? two mirrors each secured to an electromagnetic rotary system, a. source of light consisting of an electric lamp. At the transmitter station,

whether the said source of light is working. It is true that it is well known to use separate conductors for such control purposes, but the said conductors in most cases, cannot be laid, or are too expensive,

This invention enables the said control to be exercised without separate conductors, in a simple and ingenious manner.

It chiefly consists in making the switching in of one of the mirror systems at the receiver, dependent on the burning oi the lamp, in such a manner that when the two system of mirrors receive current through a relay when the lamp is burning, a signal flag or the like appears at the transmitter, otherwise it does not appear.

The switching device is illustrated by way of example in the accompanying drawing in which- A is a transmitter and B the receiver.

The battery 5 is connected in the well known manner by the Writing pencil, as soon as it is used for writing, through contacts 2, 3 and conductors 14, 15, to the two writing resistances 6, 7, from which the variable currentfor operating the writing systems 16, 17 is taken at 8, 9 to the receiver. It is necessary to have two circuits E-1O and E-1l transmitting the writing currents to the receiver but the particular arrangement of connections at 6, 7, 8, 9,n1ay be varied. The switching in of the battery current at 2, 3, can also be effected in some other manner,

When the current has been switched in. at 2, 3, a battery current will flow from T, 9, through the resistance 13, conductor 10,1nirror system 16, conductor 38, relay 1.9, conduo tor 48, earth E, resistance ell, conductor ll, thus energizing the relay 19. The said relay 19 will attract'its armature 23 and thus connect the holding relay 25 which is in series with the lamp 3 2, to the source of current 4:6.

The holding relay keeps the contact 26 closed and operates a preparatory contact 52 for the motor 28, and also connects the system of mirrors 17 through the switch 22' to the relay 19 or to E. The relay 19 remains energized as long as the contact at remains closed. After the holder relay has operated the contact at a current will flow from the resistance 6 through 8, signal 12, conductor 11, system of mirrors 17, con ductors 22, 21, relay .19 and E, back to the battery 5. The signal 12 then appears, and the writing can begin.

If the pencil is put out of use, that is to say, contact broken at 2, 3, the armature falls oil from the relay 19 and connects the electric motor 28 through the electromagnet 2%, closed contact 27 on the one hand, and mechanical contact 29, and relay contact 26, on the other hand, to the battery ill. The motor 28 brings about the advance of thc paper band 18 together with the de elop ment and other work well knrm'n in apparatus of this kind. When the work coni pleted a mechanical device not shown in the drawing, breaks the contact 29 for a short time, and cuts oil current from the holder relay which drops its iii-nurture, whereby the motor 28 is switched out. The signal 12 disappears when the pencil 1 is put out of use. This process takes place when there are no disturbances. If however the lump 32 is not burning, the holder relay 25 cannot attract its armatures, and consequently cannot switch in the mirror system 17 at The consequence that the signal 12 does not appear, thus showing that the lamp 32 not burning. The control is thus obtained indicating at the transmitter whether the receiver is properly working If the pencil is used,again before he Work of the motor 28 is finished, disturbginces can take place, for the relay 19 would be fi nill'l energized and switch out the motor To avoid this, an electromegnet is associated the joint return E, so that no current can flow from the transmitter to the receiver. In that way, when the current 18 prematurely switched 111 at 2, 3, the signal does not appear showing that the work of the motor 28 is not yet finished. The armature 23 can'be operated by the relay 19 only when current on longer flows through the motor 28 and the electroma-gnet 24. The connection diagram further shows in dotted lines the well known shutting oil of the lam 32 F of a battery current.

when the pencil is pressed on and lifted oil from the paper. In that way, the contact 2, 4, at the pencil 1 is closed or opened, and switches in or out an alternator ll), 4-1. The alternating current generated is supplied to the conductor E (earth) and to the conductors 10, 11, through condensers 42, e3, passes at the receiyer B through the conductor 35, condensers 36, and conductor E to the electroma ggnet which operates a shutter 33 for shuttin the lamp 32. If characters are written at thetransmitter, the electromegnet il t wil'h pull the shutter 33 away from the lamp 3), or conversely. The shutting oii' electromagnet-dei can also be operated through a fourth conductor by means In such case a fourth conductor'is connected at 4, and connected to 3% at l5, While the current generator 40, 41, condensers 42, 43, 3d, 37 with the conductors are done away with.

13 is an equalizingresistance. it is used for choking the alternating current from 40, 41 going toward the resistances 6, 7. The relay 19 alsohas a similar effect.

What I claim as my invention and desire to secure by Letters Patent is 1. In a, Writing or copying telegraph of the kind in which a spot of light from an electric lamp connected in an electric circuit at the receiving end follows the movements of the transmitting pencil, the combination with one of the conductors of the electric circuit used for transmitting the writing currents, of a signal device at the trans mitter end and means operated by the cursignal closed when is rent in-the. lamp circuit at the receiving end Whereby'a "ga in the circuit containing the hezzlamp is lighted n it is not giving light.

and o ened "r 111 a the, kind in whic i a spot of light from an electric lamp at the receiving end follows the movements of the transmitting pencil, the combination of transmitting conductors for the writing currents, a common return, a relay in series with said return, a holding relay" in series with the lamp at the receiv ing end,- means operated by the relay for closing a gap in the circuit oi the holding relay, a signal device at the transmitter end in circuit with one of the writing current transmitting conductors and means controlled by the holding relay for closing a gap in the circuit of such transmitting coir ductor.

3. In a writin or copying telegraph of the kind in whici a spot of light from an electric lamp at the receiving end follows the movements of the transmitting pencil, the combination of transmitting conductors for the writing-currents, a common return, a relay'in series with said return, a switch in the circuit of said relay and return, a signal device at the transmitter end in circuit with one of the writing-current transmitting conductors, a record strip or band at the receiving end, an electric motor for driving such strip, and electromagnetic means in circuit with the motor for holding open the switch in the return. circuit while current is flowing to the motor thereby giving an indication through the signal at the transmitting end that the apparatus at the receiving; end is not in condition for use.

4. In a copying or writing telegraph, the combination with the sending and receiving stations, and an electric lamp at the receiv ing station for effecting a record of the movements oit the transmitting pencil, of a signal at the transmitting station controlled by said lamp to indicate whether or not said lamp is lighted.

In testimony whereof I have affixed my signatlu'e, in presence of two witnesses.

ALPHONS RAPPENECKER.

Witnesses:

HENRY l-lnsrnn, WoLnnMAn HAUTT.

t orlcopying telegraph of 

